>>1717894not sure if dumb decision, honest mistake, or accident, but the Mount Erebus disaster comes to mind.
https://en.wikipedia.org/wiki/Mount_Erebus_disaster>Air New Zealand Antarctic sightseeing flight, 1979>crashes into side of mountain on Ross Island, pilots thought they were flying on regular course, but flight plan was corrected by the department of transport after a printing typo was discovered and not disclosed to the pilots before they departed.>The computer program was altered such that the standard telex forwarded to US air traffic controllers (ATCs) at the United States Antarctic science facility at McMurdo Station displayed the word "McMurdo", rather than the coordinates of latitude and longitude, for the final waypoint. During the subsequent inquiry, It was concluded that this was a deliberate attempt to conceal from the United States authorities that the flight plan had been changed, and probably because it was known that US Air Traffic Control would lodge an objection to the new flight path.>Despite most of the crew being engaged in identifying visual landmarks at the time, they never perceived the mountain directly in front of them. Passenger photographs taken seconds before the collision removed all doubt of a "flying in cloud" theory, showing perfectly clear visibility well beneath the cloud base, with landmarks 13 miles (21 km) to the left and 10 miles (16 km) to the right of the aircraft visible.whole lot of mistakes.
Also interesting to note:
>Efforts for recovery were extensive, owing in part to the pressure from Japan, as 24 passengers had been Japanese.>Dignitaries including Sir Edmund Hillary (First Mount Everest Climber to reach the summit) had acted as guides on previous flights. Hillary was scheduled to act as the guide for the fatal flight of 28 November 1979, but had to cancel owing to other commitments. His long-time friend and climbing companion, Peter Mulgrew, stood in as guide. 